package com.itheima.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.itheima.mapper.EmpMapper;
import com.itheima.pojo.Emp;
import com.itheima.pojo.PageBean;
import com.itheima.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmpServiceImpl implements EmpService {

    @Autowired
    private EmpMapper empMapper;

    /*
        @Override
        public PageBean page(Integer page, Integer pageSize) {
            // 1、获取总记录数
            Long count = empMapper.count();

            // 2、获取分页查询结果列表
            Integer start = (page - 1) * pageSize;
            List<Emp> empList= empMapper.page(start, pageSize);

            // 3、封装PageBean对象
            PageBean pageBean = new PageBean(count, empList);
            return pageBean;
        }*/
    @Override
    public PageBean page(Integer page, Integer pageSize, String name, Short gender, LocalDate begin, LocalDate end) {
        //1、设置分页参数
        PageHelper.startPage(page, pageSize);

        // 2、执行查询
        List<Emp> empList = empMapper.list(name, gender, begin, end);
        Page<Emp> pageEmp = (Page<Emp>) empList;

        // 3、封装PageBean对象
        PageBean pageBean = new PageBean(pageEmp.getTotal(), pageEmp.getResult());
        return pageBean;
    }

    @Override
    public void delete(List<Integer> ids) {
        empMapper.delete(ids);
    }

    @Override
    public Emp getById(Integer id) {
        Emp emp = empMapper.getById(id);
        return emp;
    }

    @Override
    public void update(Emp emp) {
        emp.setUpdateTime(LocalDateTime.now());
        empMapper.update(emp);
    }

    @Override
    public Emp login(Emp emp) {
        return empMapper.getByUsernameAndPassword(emp);
    }
}
